Buffing wheel and method of making the same



Feb. 24, 1953 G. A. LYON 7 2,629,212

BUFFING WHEEL AND METHOD OF MAKING THE SAME Filed Nov. 22, 1949 2 SHEETS-SHEET 1 G. A. LYON Feb. 24, 1953 BUFFING WHEEL AND METHOD OF MAKING THE SAME 2 SHEETSSHEET 2 Filed Nov. 22, 1949 [bf/EELUP eozgeekzbeftlyafl Ey-Z 1%.; W 711 5 Patented Feb. 24, 1953 BUEFINGK WHEEL ANDMETHODOF THE SAME George Albert Lyon; :Detroit; Mich.

AnnlicationNosembc 2 949;8 2: 1 BIO-1.2.8330

(01; sle-193) flfhis invention relates to improvements in a bufi assembly for use on. albuifi s wheel. .Mo c particularly, it has to. do .witha bufi assembly which may be economically formedwith a,.pr edetermined irregular peripheral contour .fcr ready-installationon a spindle of abuffing wheel. In. my copending, application for patent Serial No. 126,353, (filed November 9,1949 now .Patent No; 2,571,;47, dated October 1.6,, .9.51, I .described and claimed "a, "built assembly. in which. an elongated strip. or buffing material was wound on a grooved core or arbor hayinga. pnedetermined irregular contour. According to the method described in that iapplication the buff assem lr impr vised in which the depth or the huffins. mate al i con tant. re ard ess f; he irreeu ancontour .oi the or In fiormina abu-fl? assem y b g. c ntinuous strip on a core; with, an .irregularcexteriorisurface, it1has beenfound particularly ditficult to :windth strip on. a downwar lywinminedportion of the coresurface. .Lt, is thfi lefor-e, an important object of the present inven .tion to provide. a novel method. \fQr .willding .-a

.continuous: strip of lam-firing :material on a downwardly inclined core surtace.

.Anotherobject of thisinventionis to provide a h assembly in w h the-continuous; st iniof bufiins material. iswwou dsin a helical. pa h on the s r us torm ns a "buffin scontactsurfac that will not wear grooves in the article being buffed" still i -rth obje t or this inve tio is; to

provide. a. novel method; or fastening a strip of bumps aterial to the corenr a atoryitc w nd.- .ing; thestrip. on the core.

Another andf ltther object, of this intention is to provide a novel, sectional. core fcnabuffing wheel.

According to the teachings of the present; in,- vention. a buif assembly is formed by winding a continuousstri-p of b uifing; material on a core having an irregular. contour. ,The core is formed nctwo sectionsrone section havin .theiupwardly inclined. portion of the peripheralcontour and the other section having the downwardly inclined portion of the contour.

The two core sections are rotatably mounted highest point of the core is reached. At this rpoint the core section having the downwardly sloped-portion is brought op -close to the first core section and, the other endof the buffing material is secured'in the second core section at the lowest portion thereof.

Rotation of the second core section will then cause the. buffing material strip to be wound on the rotating core section. Asth'e bufiing ma- .terial' is, wound. on the rotating core section-it approaches the intersection of the two core portions. The length of the bufiing material is, of course, chosen so, the entirestrip may "be tightly wound on the core.

Thus, in winding the biifiing material stripon the core the winding begun at the lowestpor- .tion of the core sections and eontinued-unti'l it re hes he, h s stpo nt- Other and further features. objects and ad:- va ses of he. pres n nven io l'be ap arent to one skilled in the art from the r ollowing d ailed descript o taken n con e i with h accompanying drawings.

Qn the drawin s:

ure 1. is. a side elevational view. of a half ass mbly nstructed. accordin to the t a hings I of, the present invention;

Figur 2 is an end elevational viewof he hufi as mbly of i ure l;

Figure 3 is a fragmentary vertical sectional View taken on. line IIIw-III ofFigure 1;

.Figure 4 is a fragmentary verticalsectional view taken on lineIV-JV of Eigllrei;

Fi ure 15 a a me ary sectional v ew ak n on line V--.V of Fi ure 4;

,Iiigure 6 is an exploded View inelevarbi ml of the .novelmandrel of the present invention;

.iFignre '1 is .a side elevation-a1 view of ,thehnlf assembly of the present invention shown. a

partiallyassembled condition; and

isure 8 is a. fraen:i r tica sec iona view ofasecondembodiment of a mandrel .Ior

. use withithe bufiingassemblyof the presen inventi n-i show Qnthe. dra ings; .In Fi ur s an h ref rence num a ['21. The core 12 is madein two sections jlAanjd I 5, each section having an integrallyformed enlarged end flange Ma and I-5a respectively. M

The core sections l4 and i I Shave-abutting end surfaces, the peripheral surfacesof each core inclining downwardlyfrom the abutting "end surfaces. 2

The bunting element assembly IIincludes an elongated bufiingelement Hlof predetermined length which is formed by folding a fiat ribbon of material over a flexible wire or cable 19 so.

that the ribbon extends substantially equidistantly on either side of the cable. The ribbon portions are then sewed together as shown in Figure 3 close to the wire H! to form a bufilng element of constant depth.

A length of cable I!) longer than the buifing material ribbon is chosen so that it extends out of the element at each end. Identical wedge blocks 22 and 23, Figure 4, are secured in the opposite end of the cable as by crimping or pressing them onto the cable.

In assembling the buffs, the core sections [4 and I5 are slid onto a suitable support spindle 24.. The wedge block 22 on one end of the cable is placed in a tapered hole 24, Figure 3, in a looking key which may be positioned in a longitudinal slot 26 in the mandrel section M. The other wedgeblock 23' is disposed in a tapered hole 21, Figure 4, in a locking key 3!], which is arranged to be positioned in a longitudinal slot 32 in the core section I5.

As best seen in Figure 5, the keys 25 and 39 have curved lower surfaces which permit them to pivot toward the curved base of the slots 26 and 32, respectively, for snug engagement therein. Inclined slots 26a and 32a, Figure 6, extend at right angles to the slots 26 and 32, respectively, for the purpose of leading the wire l9 upwardly from its position in the key to the surface of the core.

To assemble the buffs, the key 25 is slid into the slot 26 of the core section IA. The element 18 is progressively wound up the sloping side of the core section 14 until it' reaches the position illustrated in Figure 7. The core section I5 is then moved up close to the core section I4. The key 30 is positioned in the slot 32 and the core section I5 is rotated while the core section [4 is held stationary.

It is of course obvious that the core section 15 may be moved into position against the core section l4 prior to the winding of the element on section l4. Also, if the core section l5 is'free on the spindle and will rotate freely, both ends of the strip can be fastened in the core sections before the winding is begun.

It will be readily seen that, as the core section 15 is rotated, the element 18 will be progressively wound thereon starting close to the flange I50 and moving up the inclined surface toward the junction of the two core sections.

When the element assembly is wound tightly on the core sections, screw bolts 35 are inserted through aligned bores 36 and 31 in the core sections l4 and 15, respectively. In order that the core sections can be secured as soon as the element is wound on the mandrel, one of the core sections may have a continuous series of spaced openings so that, when the bolts 35 are inserted in the core section having the smaller number of holes it will find a hole in the other core section without much rotation of the section to align the hole. In Figure 2 it is seen that the core section I4 has eight holes while the 42a and 43a.

the mandrel or may be inclined. Their only purpose is to prevent creeping of the buffing material strip. a

In Figure 8 there is illustrated a second embodiment of the buffing assembly of the present invention. In this view there is shown a buifing assembly having two core sections 42 and 43, each having oppositely inclined curved surfaces The buifing material disposed on these surfaces is shown in dotted outline in Figure 8. This view illustrates that the method used in the present invention can be used on other core surfaces besides the one illustrated in Figure 3.

From the foregoing description it will be seen that there is provided in this invention a novel core section I5 is provided with only four holes.

method of winding a strip of buifing material on a core having an irregular surface. This method is especially efiicient inwinding material on a This improved method of assembling a buff is extremely simple in operation, but produces an eificient accurately shaped buff assembly.

It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention.

I claim as my invention:

1. A surface-treating assembly comprising a first core section having anaxial aperture therethrough and an axially extending upwardly inclined surface that has 2. highest point adjacent one end face of said first core section, an elon-'- gated strip of surface-treating material, means for securing one end of said material to said first core section at .a point spaced from said one end face, a second core section having an axial aperture arranged to be aligned with the aperture of said first section on a common spindle, said second core section having an axially extending upwardly inclined surface with the highest point adjacent the end face of the second core section that abuts said one end face of said first core section, means for securing the other end of said strip on said second section adjacent the low end of said surface.

2. A surface-treating assembly comprising first and second core sections having abutting end surfaces and axial apertures arranged for disposition on a common spindle, each core section having an axially inclined outer surface with its highest point at said abutting end surface of said section, and means for securing the ends of a surface-treating material strip to said core sections.

3. A'bufi assembly comprising a first and a second core section having axially aligned apertures and arranged to be disposed in abutting relation on a common spindle, each section having an inclined surface with its crest at the abutting surfaces, an elongated strip of buffing material secured to said one section at the base of the upwardly inclined surface and secured to the other section at the base of the inclined surface, means for securing said core sections together, said means including selectively positionable bolts arranged to hold the buff in assembled condition.

4. In a method of forming a surface-treating assembly having a two piece composite core formed of two core sections with abutting end faces, each core section having an upwardly slanted peripheral surface with a high point at the abutting faces of the cores, the steps of holding the first core section in a stationary position, securing one end of a flexible strip of surfacetreating material to said first core section adjacent one end thereof, winding said material strip on said first core section starting at said secured point and moving up the inclined surface toward the opposite end of the core section, positioning the second core section for rotation on a spindle in axial alignment with said first core section, securing the free end of said bufiing strip to said second core section at the base of the inclined surface, rotating said second core on said spindle While holding said first core section stationary causing said strip to be wound on said second core starting at the base of the inclined surface and moving toward the end face of said first core section.

5. A surface-treating assembly comprising a first core section having an axially extending upwardly inclined surface having a high point adjacent one end face thereof, means for securing one end of a strip of surface-treating material to said first core section at a point thereon spaced. from said one end face thereof, a second core section rotatable relative to said first core section and having an axially extending upwardly inclined surface having a high point adjacent an end face thereof in adjoining relation to said one end face of said first core section, means for securing the other end of the strip of surface-treating material on said second core section at a point thereon spaced from said end face thereof, and means for securing said relatively rotatalble core sections together with the surface-treating material wound tightly and uniformly over both core sections and over the junction of said adjoining end faces thereof.

6. In a method of forming a surface-treating assembly having a two-piece composite core formed of two core sections with adjoining end faces, each core section having an upwardly slanted peripheral surface with a high point at the abutting faces of the section-s, the steps of securing one end of a flexible strip of surfacetreating material to one of said core sections at a point spaced from said abutting faces, securing the other end of said surface-treating material strip to the other of said cor-e sections at a point spaced from said adjoining faces, winding said surface-treating material strip on each core section starting at said point thereon and moving up said inclined surface thereof, and effecting relative rotation of said core sections until said strip is wound uniformly over both of said core section-s and over the junction of said adjoining faces thereof.

GEORGE ALBERT LYON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Re. 15,226 Levett Nov. 15, 1921 230,768 Gingras Aug. 3, 1880 291,709 Fowler Jan. 8, 1884 463,129 Yates Nov. 10, 1891 533,833 Webster Feb. 5, 1895 1,761,890 Ludorf June 3, 1930 1,927,862 Zimmerman Sept. 26, 1933 2,267,584 Cave et a1. Dec. 23, 1941 2,424,873 A'bbrecht July 27, 1947 2,468,686 Sax Apr. 26, 1949 FOREIGN PATENTS Number Country Date 2,319 France May 30, 1829 289,325 France May 29, 1899 550,823 France Dec. 211, 1922 

